Should I let my family friend spank me

I female just turned 18 three months ago and have been staying with my very good family friends for the last year while my parents have been traveling. Basically a husband and wife in their forties who have always been like second parents to me and their 20 year old son Peter. I have known peter my whole life and he has always been a guiding figure and a role model to me, seemingly always knowing what to do to calm me down and take care of me. My parents travel a lot so Peter’s presence and his family in my life is extremely valued. A few weeks ago I was having one of my signature meltdowns and Peter told me that he really felt like I needed to be spanked to be calmed down and taught a lesson about my behavior. I was shocked and asked him why he would say something like that, since he has never brought it up before but not opposed to the idea. He revealed that ever since I turned sixteen he felt that my temperament would have benefited from a good paddling, but didn’t feel like it was appropriate it give me one. Now that I’m an adult though Peter feels like this should be a part, if not the main part of him taking care of me. A few nights ago he brought it up during dinner with his parents and they also shared that they thought Peter should spank me “nice and hard” and Deborah Peter’s mom said that it was “about time” I let Peter help me this way. While I appreciate how much Peter and his family care about me I’m a bit hurt that for two years I didn’t get spanked, when he and his entire family agreed that it would’ve been highly beneficial. I get that it would have been inappropriate for an 18 year old Peter to spank me when O was sixteen, but I feel like his father Shane could have administered spankings in a paternal way. Anyways Peter’s parents are going out of town tomorrow to give us some privacy and Peter has already told me that he plans to use the event to give “my ass a good whipping until I dont have the energy to be a brat.” and that I should come to his bedroom. I really want to be spanked since Peter has always done what is best for me and after doing further reading on the dynamic feel it would really benefit me. Should I get over my hurt on missing out on discipline for the last two years and make the most of the moment? Also I’m a bit nervous since I know he plans on paddling me. How red should my ass get? Also should I post photos if I don’t chicken out and go through with it?